TY - JOUR
T1 - An agent-based model that simulates the spatio-temporal dynamics of sources and transfer mechanisms contributing faecal indicator organisms to streams. Part 1
T2 - Background and model description
AU - Neill, Aaron J.
AU - Tetzlaff, Doerthe
AU - Strachan, Norval J.C.
AU - Hough, Rupert L.
AU - Avery, Lisa M.
AU - Kuppel, Sylvain
AU - Maneta, Marco P.
AU - Soulsby, Chris
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/9/15
Y1 - 2020/9/15
N2 - A new Model for the Agent-based simulation of Faecal Indicator Organisms (MAFIO) is developed that attempts to overcome limitations in existing faecal indicator organism (FIO) models arising from coarse spatial discretisations and poorly-constrained hydrological processes. MAFIO is a spatially-distributed, process-based model presently designed to simulate the fate and transport of agents representing FIOs shed by livestock at the sub-field scale in small (<10 km2) agricultural catchments. Specifically, FIO loading, die-off, detachment, surface routing, seepage and channel routing are modelled on a regular spatial grid. Central to MAFIO is that hydrological transfer mechanisms are simulated based on a hydrological environment generated by an external model for which it is possible to robustly determine the accuracy of simulated catchment hydrological functioning. The spatially-distributed, tracer-aided ecohydrological model EcH2O-iso is highlighted as a possible hydrological environment generator. The present paper provides a rationale for and description of MAFIO, whilst a companion paper applies the model in a small agricultural catchment in Scotland to provide a proof-of-concept.
AB - A new Model for the Agent-based simulation of Faecal Indicator Organisms (MAFIO) is developed that attempts to overcome limitations in existing faecal indicator organism (FIO) models arising from coarse spatial discretisations and poorly-constrained hydrological processes. MAFIO is a spatially-distributed, process-based model presently designed to simulate the fate and transport of agents representing FIOs shed by livestock at the sub-field scale in small (<10 km2) agricultural catchments. Specifically, FIO loading, die-off, detachment, surface routing, seepage and channel routing are modelled on a regular spatial grid. Central to MAFIO is that hydrological transfer mechanisms are simulated based on a hydrological environment generated by an external model for which it is possible to robustly determine the accuracy of simulated catchment hydrological functioning. The spatially-distributed, tracer-aided ecohydrological model EcH2O-iso is highlighted as a possible hydrological environment generator. The present paper provides a rationale for and description of MAFIO, whilst a companion paper applies the model in a small agricultural catchment in Scotland to provide a proof-of-concept.
KW - Diffuse pollution
KW - E. coli
KW - EcHO-iso
KW - Microbial water quality
KW - Tracer-aided modelling
KW - Water quality modelling
UR - http://www.scopus.com/inward/record.url?scp=85087780398&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2020.110903
DO - 10.1016/j.jenvman.2020.110903
M3 - Article
C2 - 32721338
AN - SCOPUS:85087780398
SN - 0301-4797
VL - 270
JO - Journal of Environmental Management
JF - Journal of Environmental Management
M1 - 110903
ER -